Vulnerability Details CVE-2026-15788
BuildKit's cache mount source= selector on Windows Container on Windows (WCOW) workers does not detect NTFS directory junctions placed inside the cache root. A build authored by an untrusted user on a WCOW-configured BuildKit daemon can read arbitrary host files reachable to the BuildKit daemon process.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 4.3%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-15788
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cpe:2.3:a:mobyproject:buildkit:0.10.0
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cpe:2.3:a:mobyproject:buildkit:0.10.1
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cpe:2.3:a:mobyproject:buildkit:0.10.2
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cpe:2.3:a:mobyproject:buildkit:0.10.3
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cpe:2.3:a:mobyproject:buildkit:0.10.4
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cpe:2.3:a:mobyproject:buildkit:0.10.5
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cpe:2.3:a:mobyproject:buildkit:0.10.6
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cpe:2.3:a:mobyproject:buildkit:0.11.0
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cpe:2.3:a:mobyproject:buildkit:0.11.1
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cpe:2.3:a:mobyproject:buildkit:0.11.2
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cpe:2.3:a:mobyproject:buildkit:0.11.3
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cpe:2.3:a:mobyproject:buildkit:0.11.4
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cpe:2.3:a:mobyproject:buildkit:0.11.5
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cpe:2.3:a:mobyproject:buildkit:0.11.6
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cpe:2.3:a:mobyproject:buildkit:0.12.0
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cpe:2.3:a:mobyproject:buildkit:0.12.1
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cpe:2.3:a:mobyproject:buildkit:0.12.2
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cpe:2.3:a:mobyproject:buildkit:0.12.3
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cpe:2.3:a:mobyproject:buildkit:0.12.4
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cpe:2.3:a:mobyproject:buildkit:0.12.5
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cpe:2.3:a:mobyproject:buildkit:0.13.0
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cpe:2.3:a:mobyproject:buildkit:0.13.1
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cpe:2.3:a:mobyproject:buildkit:0.13.2
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cpe:2.3:a:mobyproject:buildkit:0.14.0
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cpe:2.3:a:mobyproject:buildkit:0.14.1
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cpe:2.3:a:mobyproject:buildkit:0.15.0
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cpe:2.3:a:mobyproject:buildkit:0.15.1
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cpe:2.3:a:mobyproject:buildkit:0.15.2
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cpe:2.3:a:mobyproject:buildkit:0.16.0
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cpe:2.3:a:mobyproject:buildkit:0.17.0
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cpe:2.3:a:mobyproject:buildkit:0.17.1
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cpe:2.3:a:mobyproject:buildkit:0.17.2
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cpe:2.3:a:mobyproject:buildkit:0.17.3
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cpe:2.3:a:mobyproject:buildkit:0.18.0
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cpe:2.3:a:mobyproject:buildkit:0.18.1
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cpe:2.3:a:mobyproject:buildkit:0.18.2
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cpe:2.3:a:mobyproject:buildkit:0.19.0
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cpe:2.3:a:mobyproject:buildkit:0.20.0
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cpe:2.3:a:mobyproject:buildkit:0.20.1
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cpe:2.3:a:mobyproject:buildkit:0.20.2
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cpe:2.3:a:mobyproject:buildkit:0.21.0
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cpe:2.3:a:mobyproject:buildkit:0.21.1
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cpe:2.3:a:mobyproject:buildkit:0.22.0
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cpe:2.3:a:mobyproject:buildkit:0.23.0
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cpe:2.3:a:mobyproject:buildkit:0.23.1
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cpe:2.3:a:mobyproject:buildkit:0.23.2
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cpe:2.3:a:mobyproject:buildkit:0.24.0
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cpe:2.3:a:mobyproject:buildkit:0.25.0
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cpe:2.3:a:mobyproject:buildkit:0.25.1
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cpe:2.3:a:mobyproject:buildkit:0.25.2
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cpe:2.3:a:mobyproject:buildkit:0.26.0
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cpe:2.3:a:mobyproject:buildkit:0.26.1
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cpe:2.3:a:mobyproject:buildkit:0.26.2
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cpe:2.3:a:mobyproject:buildkit:0.26.3
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cpe:2.3:a:mobyproject:buildkit:0.27.0
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cpe:2.3:a:mobyproject:buildkit:0.27.1
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cpe:2.3:a:mobyproject:buildkit:0.28.0
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cpe:2.3:a:mobyproject:buildkit:0.28.1
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cpe:2.3:a:mobyproject:buildkit:0.29.0
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cpe:2.3:a:mobyproject:buildkit:0.3.0
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cpe:2.3:a:mobyproject:buildkit:0.3.1
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cpe:2.3:a:mobyproject:buildkit:0.3.2
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cpe:2.3:a:mobyproject:buildkit:0.3.3
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cpe:2.3:a:mobyproject:buildkit:0.30.0
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cpe:2.3:a:mobyproject:buildkit:0.31.0
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cpe:2.3:a:mobyproject:buildkit:0.31.1
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cpe:2.3:a:mobyproject:buildkit:0.4.0
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cpe:2.3:a:mobyproject:buildkit:0.5.0
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cpe:2.3:a:mobyproject:buildkit:0.5.1
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cpe:2.3:a:mobyproject:buildkit:0.6.0
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cpe:2.3:a:mobyproject:buildkit:0.6.1
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cpe:2.3:a:mobyproject:buildkit:0.6.2
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cpe:2.3:a:mobyproject:buildkit:0.6.3
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cpe:2.3:a:mobyproject:buildkit:0.6.4
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cpe:2.3:a:mobyproject:buildkit:0.7.0
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cpe:2.3:a:mobyproject:buildkit:0.7.1
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cpe:2.3:a:mobyproject:buildkit:0.7.2
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cpe:2.3:a:mobyproject:buildkit:0.8.0
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cpe:2.3:a:mobyproject:buildkit:0.8.1
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cpe:2.3:a:mobyproject:buildkit:0.8.2
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cpe:2.3:a:mobyproject:buildkit:0.8.3
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cpe:2.3:a:mobyproject:buildkit:0.9.0
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cpe:2.3:a:mobyproject:buildkit:0.9.1
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cpe:2.3:a:mobyproject:buildkit:0.9.2
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cpe:2.3:a:mobyproject:buildkit:0.9.3